CN115231971A - Preparation process of agricultural zinc-containing fully water-soluble monoammonium phosphate - Google Patents
Preparation process of agricultural zinc-containing fully water-soluble monoammonium phosphate Download PDFInfo
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- CN115231971A CN115231971A CN202110441413.3A CN202110441413A CN115231971A CN 115231971 A CN115231971 A CN 115231971A CN 202110441413 A CN202110441413 A CN 202110441413A CN 115231971 A CN115231971 A CN 115231971A
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- Prior art keywords
- slurry
- clear liquid
- enters
- storage tank
- monoammonium phosphate
- Prior art date
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- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 title claims abstract description 18
- 235000019837 monoammonium phosphate Nutrition 0.000 title claims abstract description 18
- 239000006012 monoammonium phosphate Substances 0.000 title claims abstract description 17
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000011701 zinc Substances 0.000 title claims abstract description 16
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000002002 slurry Substances 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000003860 storage Methods 0.000 claims abstract description 16
- 239000000047 product Substances 0.000 claims abstract description 15
- 239000000706 filtrate Substances 0.000 claims abstract description 13
- 239000004254 Ammonium phosphate Substances 0.000 claims abstract description 11
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims abstract description 11
- 235000019289 ammonium phosphates Nutrition 0.000 claims abstract description 11
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000012452 mother liquor Substances 0.000 claims abstract description 9
- 239000012065 filter cake Substances 0.000 claims abstract description 8
- 230000005484 gravity Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 7
- 238000001694 spray drying Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000011573 trace mineral Substances 0.000 claims description 4
- 235000013619 trace mineral Nutrition 0.000 claims description 4
- 230000009291 secondary effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 235000015097 nutrients Nutrition 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 12
- 239000003337 fertilizer Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000010413 mother solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000282849 Ruminantia Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- PYCBFXMWPVRTCC-UHFFFAOYSA-N ammonium metaphosphate Chemical compound N.OP(=O)=O PYCBFXMWPVRTCC-UHFFFAOYSA-N 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a preparation process of agricultural zinc-containing fully water-soluble monoammonium phosphate, which comprises the following steps of S1: ammonium phosphate slurry is neutralized by ammonium phosphate, the neutralized monoammonium phosphate slurry is conveyed to a slurry temporary storage tank, and then the slurry in the slurry temporary storage tank is filtered by a filter press; s2: clear liquid and filter cakes appear after the filtration of the filter press, the clear liquid enters a clear liquid temporary storage tank, the filter cakes enter a slurry tank for slurry formation and then are pumped into other systems for use, and the clear liquid is conveyed to a clear liquid storage tank through a pump and then enters a filtrate mixing tank; s3: after entering a filtrate mixing tank. The invention changes the flow in the middle of the production process, adds auxiliary materials, adds auxiliary solution into the product mother liquor, enters a rear working section for concentration, controls the specific gravity of a concentration end point, sprays powder, dries, and the dried powder product enters a packaging system, and adjusts the product nutrients according to the needs of customers, and the needed product content is adjusted in the mother liquor stage.
Description
Technical Field
The invention relates to the technical field of agriculture, in particular to a preparation process of agricultural zinc-containing fully water-soluble monoammonium phosphate.
Background
Ammonium dihydrogen phosphate, a chemical preparation, also called monoammonium phosphate, is a white crystal, has a chemical formula of NH4H2PO4, can be decomposed into ammonium metaphosphate (NH 4PO 3) by heating, can be prepared by the reaction of ammonia water and phosphoric acid, is mainly used as a fertilizer, a fire retardant for wood, paper and fabric, and is also used as a feed additive for pharmacy and ruminants. The application of ammonium phosphate as a fertilizer during the growth of crops is most suitable, the ammonium phosphate is acidic in soil, adverse effects can be caused by being too close to seeds, the ammonium phosphate is better than ordinary calcium and ammonium sulfate in acidic soil, and is also superior to other fertilizers in alkaline soil; it is not suitable to be mixed with alkaline fertilizer to avoid reducing fertilizer efficiency.
Aiming at partial areas, (partial special crops, binary (nitrogen fertilizer and phosphate fertilizer) high-phosphorus fertilizer which needs partial trace elements, and the existing zinc full-water-soluble monoammonium phosphate, the single-batch product has small scale degree, and the equipment needs to be cleaned systematically when one batch of product is produced, thereby influencing the machine-hour yield of a single system.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a preparation process of agricultural zinc-containing fully water-soluble monoammonium phosphate.
The invention provides a preparation process of agricultural zinc-containing fully water-soluble monoammonium phosphate, which comprises the following steps:
s1: ammonium phosphate slurry is neutralized by ammonium phosphate, the neutralized monoammonium phosphate slurry is conveyed to a slurry temporary storage tank, and then the slurry in the slurry temporary storage tank is filtered by a filter press;
s2: clear liquid and filter cakes appear after the filtration of the filter press, the clear liquid enters a clear liquid temporary storage tank, the filter cakes enter a slurry tank for slurry formation and then are pumped into other systems for use, and the clear liquid is conveyed to a clear liquid storage tank through a pump and then enters a filtrate mixing tank;
s3: after the mixed solution enters a filtrate mixing tank, adding zinc-containing mother solution and other trace element mother solution, and then conveying the mixed solution to a secondary effect by a filtrate pump for concentration;
s4: concentrating the slurry to a certain specific gravity through a double-effect circulating system, then performing first-effect concentration, and then entering a high-pressure pump;
s5: the slurry is conveyed to a spray drying tower by a high-pressure pump for spray drying, the drying gas adopts a mode of heating air by steam, and condensed water is returned to a workshop for use;
s6: and (4) feeding the dried material into a finished product bin, packaging and warehousing.
Further, in S5, through the cooperation between the fan and the air heat exchanger, the high-temperature steam heats the air heat exchanger, so that the gas in the air heat exchanger is heated, the heated gas is conveyed into the drying tower by the fan to be dried, and the condensate water generated during heat exchange of the air heat exchanger is recycled in a workshop.
Further, in S5, tail gas of the drying tower enters a tail gas washing tower, is washed and then is exhausted, the washing liquid reaches a certain concentration and then enters a double-effect circulating system, and the washed gas is directly discharged.
The beneficial effects of the invention are as follows:
1. the invention changes the flow in the middle of the production process, adds an auxiliary material zinc-containing compound which is in a solution state, adds the solution into the product mother liquor, uniformly stirs the mixed mother liquor, enters a rear working section for concentration, controls the specific gravity of the final point of concentration, sprays powder, dries, and the dried powder product enters a packaging system, and the packaged product is a new product, the product nutrient is adjusted according to the needs of customers, and the product with required content is adjusted in the mother liquor stage.
Drawings
Fig. 1 is a process flow chart of the preparation process of the agricultural zinc-containing fully water-soluble monoammonium phosphate provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1, the preparation process of the agricultural zinc-containing fully water-soluble monoammonium phosphate comprises the following steps:
s1: ammonium phosphate slurry is neutralized by ammonium phosphate, the neutralized monoammonium phosphate slurry is conveyed to a slurry temporary storage tank, and then the slurry in the slurry temporary storage tank is filtered by a filter press;
s2: clear liquid and filter cakes appear after the filtration of the filter press, the clear liquid enters a clear liquid temporary storage tank, the filter cakes enter a slurry tank for slurry formation and then are pumped into other systems for use, and the clear liquid is conveyed to a clear liquid storage tank through a pump and then enters a filtrate mixing tank;
s3: after the mixture enters a filtrate mixing tank, adding zinc-containing mother liquor and other trace element mother liquor into the filtrate mixing tank, and pumping the filtrate to a secondary effect for concentration;
s4: concentrating the slurry to a certain specific gravity through a double-effect circulating system, then performing first-effect concentration, and then entering a high-pressure pump;
s5: the slurry is conveyed to a spray drying tower by a high-pressure pump for spray drying, the drying gas adopts a mode of heating air by steam, and condensed water is returned to a workshop for use;
s6: and (4) feeding the dried material into a finished product bin, packaging and warehousing.
In the invention, in S5, the air heat exchanger is heated by high-temperature steam through the matching between the fan and the air heat exchanger, so that the gas in the air heat exchanger is heated, the heated gas is conveyed into the drying tower by the fan for drying, and the condensate water generated during heat exchange of the air heat exchanger is recycled by a workshop. And S5, enabling the tail gas of the drying tower to enter a tail gas washing tower, emptying after washing, enabling the washing liquid to reach a certain concentration and then enter a two-effect circulating system, and directly discharging the washed gas.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. The preparation process of the agricultural zinc-containing fully water-soluble monoammonium phosphate is characterized by comprising the following steps:
s1: ammonium phosphate slurry is neutralized by ammonium phosphate, the neutralized monoammonium phosphate slurry is conveyed to a slurry temporary storage tank, and then the slurry in the slurry temporary storage tank is filtered by a filter press;
s2: clear liquid and filter cakes appear after filtration by the filter press, the clear liquid enters a temporary clear liquid storage tank, the filter cakes enter a slurry tank for slurry formation and then are pumped into other systems for use, and the clear liquid is conveyed to a clear liquid storage tank through a pump and then enters a filtrate mixing tank;
s3: after the mixture enters a filtrate mixing tank, adding zinc-containing mother liquor and other trace element mother liquor into the filtrate mixing tank, and pumping the filtrate to a secondary effect for concentration;
s4: concentrating the slurry to a certain specific gravity through a double-effect circulating system, then performing first-effect concentration, and then entering a high-pressure pump;
s5: the slurry is conveyed to a spray drying tower by a high-pressure pump for spray drying, the drying gas adopts a mode of heating air by steam, and condensed water is returned to a workshop for use;
s6: and (4) feeding the dried material into a finished product bin, packaging and warehousing.
2. The preparation process of the agricultural zinc-containing fully water-soluble monoammonium phosphate according to claim 1, wherein in the step S5, the air heat exchanger is heated by high-temperature steam through the cooperation between the fan and the air heat exchanger, so that the air in the air heat exchanger is heated, the fan conveys the heated air into the drying tower for drying, and the condensate water generated in the heat exchange process of the air heat exchanger is recycled to a workshop for use.
3. The preparation process of the agricultural zinc-containing fully water-soluble monoammonium phosphate according to claim 1, wherein in S5, tail gas from a drying tower enters a tail gas washing tower, is washed and then emptied, a washing solution reaches a certain concentration and then enters a two-effect circulation system, and the washed gas is directly discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110441413.3A CN115231971A (en) | 2021-04-23 | 2021-04-23 | Preparation process of agricultural zinc-containing fully water-soluble monoammonium phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110441413.3A CN115231971A (en) | 2021-04-23 | 2021-04-23 | Preparation process of agricultural zinc-containing fully water-soluble monoammonium phosphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115231971A true CN115231971A (en) | 2022-10-25 |
Family
ID=83665994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110441413.3A Pending CN115231971A (en) | 2021-04-23 | 2021-04-23 | Preparation process of agricultural zinc-containing fully water-soluble monoammonium phosphate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115231971A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633551A (en) * | 2012-04-23 | 2012-08-15 | 马光明 | Method for producing water soluble fertilizer with major element by using agriculture fertilizer |
| CN103130205A (en) * | 2013-03-11 | 2013-06-05 | 马光明 | Method for producing industrial monoammonium phosphate and coproducing water-soluble ammonium sulfate phosphate |
| CN105036852A (en) * | 2015-07-14 | 2015-11-11 | 湖北三宁化工股份有限公司 | Method for producing macroelement water-soluble fertilizer by using industrial grade monoammonium phosphate mother liquor |
| CN108344288A (en) * | 2018-03-02 | 2018-07-31 | 江苏豫星化工工业有限责任公司 | The method for carrying out ammonium phosphate product drying using sulfuric acid tail gas |
-
2021
- 2021-04-23 CN CN202110441413.3A patent/CN115231971A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633551A (en) * | 2012-04-23 | 2012-08-15 | 马光明 | Method for producing water soluble fertilizer with major element by using agriculture fertilizer |
| CN103130205A (en) * | 2013-03-11 | 2013-06-05 | 马光明 | Method for producing industrial monoammonium phosphate and coproducing water-soluble ammonium sulfate phosphate |
| CN105036852A (en) * | 2015-07-14 | 2015-11-11 | 湖北三宁化工股份有限公司 | Method for producing macroelement water-soluble fertilizer by using industrial grade monoammonium phosphate mother liquor |
| CN108344288A (en) * | 2018-03-02 | 2018-07-31 | 江苏豫星化工工业有限责任公司 | The method for carrying out ammonium phosphate product drying using sulfuric acid tail gas |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221025 |